Inkjet printhead with air cavities defined by ribs protruding into fluid channel

US9950528B2 · kind B2 · utility

Assignee

• Memjet Technology Limited · IE

Inventors

• Garry Raymond Jackson · Sydney, AU
• Norman Micheal Berry · Sydney, AU
• Michael John Hudson · Sydney, AU
• Brian Robert Brown · Chatswood, AU
• Samuel George Mallinson · Sydney, AU
• Geordie McBain · Chatswood, AU

Key dates

• Filing date: May 1, 2017
• Grant date: Apr 24, 2018
• Expiry date: May 1, 2037

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41J2202/21
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

An inkjet printhead including: an elongate fluid manifold comprising: an inlet boss, an outlet boss, a longitudinal channel extending between the inlet and outlet bosses, a plurality of air cavities positioned above the longitudinal channel in a roof cavity of the fluid manifold, and plurality of fluid outlets defined in a floor of the longitudinal channel; and a plurality of printhead chips attached to the base of the fluid manifold, each printhead chip receiving printing fluid from one or more fluid outlets. The air cavities are defined by ribs extending from a roof of the fluid manifold towards the longitudinal channel and each rib has a lip protruding beyond a lower surface of the inlet and outlet bosses.